Preliminary study on laser initiated multi-gate semiconductor switch
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摘要: 固态脉冲功率源在脉冲功率技术领域应用广泛，已经成为新的研究热点，其中，高功率固态开关器件是固态脉冲功率源的核心。报道了一种新型光触发多门极半导体开关（LIMS），该开关具备光致线性模式和场致增益模式两种工作模式，解决了传统电控器件电流上升率低的问题，实现了器件的高电流上升率，光致线性模式下实验测试得到了454 kA/μs的电流上升率，该开关在雷管起爆、电磁脉冲模拟等领域已得到初步应用。
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关键词:
- 光触发多门极半导体开关 /
- 固态脉冲功率源 /
- 重复频率
Abstract: Solid state pulse power sources are widely used in the field of pulse power technology and have become a new research hotspot. Among them, high-power solid-state switching devices are the core of solid-state pulse power sources. This article reports a new type of laser initiated multi gate semiconductor switch (LIMS), which has two working modes: photo induced linear mode and field induced gain mode. It solves the problem of low current rise rate in traditional electronic control devices and achieves high current rise rate of the device. Experimental tests in photo induced linear mode showed a current rise rate of 454 kA/μs. The switch has been preliminarily applied in fields such as detonator initiation and electromagnetic pulse simulation. -
图 1 光触发多门极半导体开关结构示意图及芯片实物图
Figure 1. Structural schematic diagram and physical chip diagram of laser initiated multi-gate semiconductor switch
图 3 1.7 mJ触发能量和1.2 mJ触发能量时不同电压的放电波形
Figure 3. Discharge waveforms at different voltages with trigger energies of 1.7 mJ and 1.2 mJ
图 4 0.2 mJ触发能量和0.02 mJ触发能量时不同电压的放电波形
Figure 4. Discharge waveforms at different voltages with trigger energies of 0.2 mJ and 0.02 mJ
图 5 高电压不同触发能量时放电波形
Figure 5. Discharge waveform under different triggering energies of high voltage
图 6 三种触发能量条件下模拟与测试的对比
Figure 6. Comparison of simulation and testing under three triggering energy conditions
图 7 电阻与触发能量关系拟合曲线
Figure 7. Fitting curve of the relationship between resistance and trigger energy
图 9 微秒脉冲放电测试结构及典型放电波形（10发次叠加）
Figure 9. Microsecond pulse discharge test structure and typical discharge waveform (10 cycles stacked)
图 10 固态起爆器实物及典型放电电流波形
Figure 10. Solid state detonator and typical discharge current waveform
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